Question

A girl drops an apple from the window of a train which is moving on a straight track with speed increasing with a constant rate. The trajectory of the falling apple as seen by the girl is

• A. parabolic and in the direction of the moving train
• B. parabolic and opposite to the direction of the moving train
• C. an inclined straight line pointing in the direction of the moving train
• D. an inclined straight line pointing opposite to the direction of the moving train

Answer 1

Answer: (D)

As the apple is released, it has two accelerations
$a_1=$ pseudo acceleration due to acceleration to train
and $a_2=$acceleration due to gravity

Resultant of these accelerations are as shown below.

Hence, trajectory of falling apple is an inclined straight line opposite to the direction of train